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  • exocytosis
  • Unexpectedly, maternal zygotic (MZ) dchs1b mutants show defects in the earliest developmental stage, egg activation, including abnormal cortical granule exocytosis (CGE), cytoplasmic segregation, cleavages and maternal mRNA translocation, in transcriptionally quiescent embryos. (biologists.org)
  • microfilament
  • Previous experimental works on streaming regeneration in cells of Characean algae, whose longitudinal flow is perhaps the most regimented of all, hint at an autonomous process of microfilament self-organization driving the formation of streaming patterns during morphogenesis. (pnas.org)
  • species
  • Working from first principles, we propose a robust model of streaming emergence that combines motor dynamics with both microscopic and macroscopic hydrodynamics to explain how several independent processes, each ineffectual on its own, can reinforce to ultimately develop the patterns of streaming observed in the Characeae and other streaming species. (pnas.org)
  • The distinct patterns of force distribution estimated in this study were consistent with the proposed distinct functions of the streaming in both of these species. (nig.ac.jp)
  • dynamics
  • If we want to understand what fundamental dynamics drive the formation of orderly streaming and connect the microscopic with the macroscopic, an alternative "top-down" approach is warranted. (pnas.org)
  • cell
  • Cytoplasmic streaming pervades the vast spectrum of cell types, achieving great diversity to fulfill many varied goals. (pnas.org)
  • The basic paradigm that underlies streaming, motor proteins interacting with polymer filaments, has been seen to possess many pattern-forming behaviors in both theoretical ( 9 ⇓ - 11 ) and experimental ( 11 ⇓ ⇓ - 14 ) settings, with recent work beginning to incorporate the effects of cylindrical cell-like domains ( 15 , 16 ). (pnas.org)
  • In the course of additional testing, an electric current was applied to the cell, causing a temporary stoppage of cytoplasmic streaming. (phys.org)
  • However
  • However, such studies are often "bottom up," taken out of context from concrete biological systems, and in particular no direct connection has been made to the development of cytoplasmic streaming. (pnas.org)